Answer:
Molecular Compounds.
Explanation:
They are Molecular Compounds.
which will have a greater inertia the moon or the earth
You have 1684.6 g of a bleach solution. The percent by mass of the solute sodium hypochlorite, NaOCl, is 3.62%. How many grams of solvent are in the solution?
Answer:
1623.62
Explanation:
The first step is to calculate the mass of sodium hypochlorite
1684.6× 3.62/100
1684.6× 0.0362
60.98252
Therefore the mass of the solvent can be calculated as follows
1684.6-60.98252
1623.62
What part of the US government continued to study cold fusion after others gave up on it?
A.) the Army
B.) the Navy
C) the Coast Guard
D.) the Marines.
Name a substance which will undergo changes from solid to liquid to gas between 0c and 100c
Answer:
WATER
Explanation:
Water melting point 0 c boiling 100c
Is my answer correct?
Yes the ANSWER is Correct-
On first half life the mass will be 10 gram
On second half life the mass will be 5 gram
On third half life the mass will be 2.5 gram
How are photons emitted by atoms?
Explanation:
When the electron changes levels, it decreases energy and the atom emits photons. The photon is emitted with the electron moving from a higher energy level to a lower energy level. The energy of the photon is the exact energy that is lost by the electron moving to its lower energy level.
If sufficient acid is used to react completely
with 21.0 grams of Mg
Mg(s) + 2 HCl(aq) + MgCl2(aq) + H2(g)
what volume of hydrogen at STP would be
produced?
1. 9.68 liters
2. 10.60 liters
3. 4.84 liters
4. 19.37 liters
5. 22.40 liters
Solution,
Mass of Mg - 21gm
molar mass of Mg - 24gm
moles = Given mass/ Molar mass
moles = 21/24 = 0.875
1 mole of Mg produce 1 mole of H2 gas
so 0.875 mole of Mg will produce 0.875 moles of H2 gas
One mole of H2 gas = 22.4 litre
0.875 mole of H2 gas = 0.875×22.4
0.875 mole of H2 gas = 19.60 litre
So the nearest ANSWER is Option four 19.37 litre.
STP is the standard temperature and the pressure of the gases of the system. The volume of the hydrogen that will be produced as STP is 19.37 litres.
What is volume?Volume is the amount of the substance or the solution occupied in an area or object and is estimated in L or mL. It is a scalar quantity.
Given,
Mass of magnesium = 21 gm
Molar mass of magnesium = 24 gm/mol
Moles of magnesium can be calculated as,
[tex]\begin{aligned}\rm moles &= \rm \dfrac{mass}{molar\;mass}\\\\&= \dfrac{21}{24}\\\\&= 0.875 \;\rm mol\end{aligned}[/tex]
If 1-mole magnesium = 1-mole hydrogen gas
Then 0.875-mole magnesium = 0.875 moles of hydrogen gas
If 1 mole of hydrogen gas = 22.4 L
Then, 0.875 moles of hydrogen gas = x L
Solving for x:
[tex]\begin{aligned}\rm x &= 0.875 \times 22.4\\\\&= 19.60 \;\rm litre\end {aligned}[/tex]
Therefore, the volume of hydrogen at STP would be option 4. 19.37 litres.
Learn more about volume and STP here:
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How long would it take a train to travel 500 miles at 25 mph?
Answer:
2 or 3 hrs
I think
HOPE IT HELPED
What is the pOH in a solution that has pH = 11.397
Answer:
The pOH is 2.603
Explanation:The formula for finding pOH by pH is simply subtracting the pH from 14 pOH=14-11.397pOH=2.603.
MARKING BRAINLIEST Think about the fact that water is most dense at 4°C, and the fact that ice is much less dense than
water.
a. What would happen to a lake or a pond in the winter (in a cold climate) if this wasn’t the
case?
b. What if the water continued to contract, and the solid form (ice) was more dense than liquid
water?
c. How would this affect the life in the lake
please answer all
Answer:
See Explanation
Explanation:
a) If water is not most dense at 4°C, then the entire lake or pond will simply freeze bottom-up during winter thereby leading to the death of all the aquatic organisms inside the pond.
b) If the solid ice was more dense than water then it will sink inside the water thereby making room for the water to continue to freeze until all the water in the lake or pond will be converted to ice.
c) If the scenario described in (a) and (b) above occurs, the lake will simply cease to exist because all the living organisms in it will die and begin to decay after the ice has melted after the winter season thereby leading to a complete loss of the lake or pond.
Answer:
mark them brainyist
Explanation:
Brief report on the carbon cycle
Answer:
Explanation:
The carbon cycle describes the process in which carbon atoms continually travel from the atmosphere to the Earth and then back into the atmosphere. Carbon is released back into the atmosphere when organisms die, volcanoes erupt, fires blaze, fossil fuels are burned, and through a variety of other mechanisms.
Name the following ketone:
The correct answer is
1,4-dichloro-2-pentanone
The name of the given molecule will be "1,4-dichloro-2-pentanone".
What is molecule?A molecule represents the tiniest unit of a material that keeps its content and properties. It must be made up of two or more atoms that have been joined together by chemical bonds.
What is 1,4-dichloro-2-pentanone?This molecule will be made by carbon, oxygen , hydrogen and oxygen molecule.
It can be seen that given molecule has 5 carbon atom in which 1 and 4 position of carbon atom chlorine atom is present and at 2 carbon oxygen atom is presence. that's why the name of the given molecule will be "1,4-dichloro-2-pentanone".
In this molecule one ketone and two halogen (Cl) groups are present that's why it can be consider as keto halogen compound.
The molecular formula of this compound can be written as [tex]C_{5} H_{10} Cl_{2} O[/tex]. Presence of oxygen molecule indicate that keto group should be present in the given molecule . So the name of the compound should be 1,4-dichloro-2-pentanone
Therefore, the correct answer will be option (C).
To know more about molecule
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Which two types of cells are involved in fertilization?
OA. zygote; egg cell
OB. zygote; prokaryote
Oc. sperm cell; zygote
D. egg cell; sperm cell
Which two types of cells are involved in fertilization?
[tex]\sf\purple{D.\: egg\: cell;\: sperm \:cell}[/tex]✅
Gametes are an organism's reproductive cells. The female gametes are called ova or egg cells, and the male gametes are called sperm. During fertilisation, the gametes (an egg and sperm) fuse to form a zygote.[tex]\circ \: \: { \underline{ \boxed{ \sf{ \color{green}{Happy\:learning.}}}}}∘[/tex]
why us graphite used as a lubricant?
Answer:
The carbon atoms are strongly bonded together in sheets.
Explanation:
Because the bonds between the sheets are weak, graphite shows lower shearing strength under friction force. Thus it can be used as a solid lubricant and has become one of traditional and primary solid lubrication materials.
Explanation:
The carbon atoms are strongly bonded together in sheets. Because the bonds between the sheets are weak, graphite shows lower shearing strength under friction force. Thus it can be used as a solid lubricant and has become one of traditional and primary solid lubrication materials.
30 POINTS PLS MATCH THESE UP!!
ITEM BANK: Move to Top
This is a species which speeds up chemical reactions, but does not react itself.
dag and drop where
Catalyst
The changing of substances to other substances by the breaking of bonds in
reactants and the formation of bonds in products.
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Chemical Reaction
This is the substance(s) formed in a chemical reaction.
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Neutralization
Precipitate
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A chemical reaction in which two or more substances combine to form a single
substance. Also known as a combination reaction.
A chemical change in which a single compound is broken down into two or more
simpler products,
Reactants
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decomposition reaction
double replacement
A chemical change in which one element replaces a second element in a compound,
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endothermic
A chemical change that involves an exchange of positive ions between two
compounds.
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exothermic
A heat-absorbing process
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half reaction
A heat releasing process.
drag and drop answer here
product
single replacement reaction
These are the elements or compounds that enter into a chemical reaction. .
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structural formula
This is the type of reaction that occurs when an acid cancels with a base.
drag and drop answer here
synthesis reaction
This is a solid that is formed during a chemical reaction, typically in solution.
drag and drop answer here
A half reaction shows either the oxidation or reduction half of a redox reaction.
drag and drop answer het
A formula showing all the atoms and valence electrons in the formula. This is also
called a Lewis Structure.
drag and drop answer here
Answer:
There is an app called Socrative (It has an owl on the app) that can give you the definition so you can match them without waiting. All you have to do is take a picture of the definition and it will give you the answer
How many moles of CO2 are there in 2.55E18 molecules of CO2?
Answer: 1.535e42 (or 1.535x10^42) moles of CO2
Explanation: i know this is six days late, but all you have to do for this one is multiply 2.55e18 by the standard mole value, 6.02e23 and your calculator will give you 1.535e42 moles!
(PLEASE HELP) 500 mL of a gas is collected at 745 mmHg. What will the volume be at 1.8 atm?
Answer:
272.22 mLExplanation:
The new volume can be found by using the formula for Boyle's law which is
[tex]P_1V_1 = P_2V_2[/tex]
where
P1 is the initial pressure
P2 is the final pressure
V1 is the initial volume
V2 is the final volume
Since we're finding the new volume we have
[tex]V_2 = \frac{P_1V_1}{P_2} \\[/tex]
First convert 745 mmHg to atm
760 mmHg = 1 atm
745 mmHg = 745/760 = 0.98 atm
We have
[tex]V_2 = \frac{500 \times 0.98}{1.8} \\ = 272.222...[/tex]
We have the final answer as
272.22 mLHope this helps you
multiple choice question!
Answer:
butyne
Explanation:
Suffix -yne indicates presence of triple bond and prefix but- means 4 carbons atoms.
Whoever solves this right will get brainliest :3
Reaction 1 → Al + Zn²⁺ ⟶ Al³⁺ + Zn
Reaction 2 → Al³⁺ + Li ⟶ Al + Li⁺
To Find :-Substance OxidisedSubstance ReducedOxidizing Agent Reducing Agent Answers :-Reaction 1 :-
Substance Oxidised :- Al
Substance Reduced :- Zn²⁺
Oxidizing Agent :- Zn²⁺
Reducing Agent :- Al
Reaction 2 :-
Substance Oxidised :- Li
Substance Reduced :- Al³⁺
Oxidizing Agent :- Al³⁺
Reducing Agent :- Li
____________________Final Answers :-Reaction 1 :-
Al
Zn²⁺
Zn²⁺
Al
Reaction 2 :-
Li
Al³⁺
Al³⁺
Li
____________________Energy is released when the nucleus of an atom splits and two smaller atoms are formed. What is the name of this process?
A. Electricity
B. Nuclear Fusion
C. Positron Particles
D. Nuclear Fission
Explanation:
It's (D), nuclear fission................
1 Which process causes the greatest increase in the distance between particles?
A condensation
B freezing
C melting
D sublimation
The Answer is compensation
18.) CCC Energy and Matter Photovoltaic power from solar panels and biomass
energy are obviously forms of solar energy, coming from sunlight. Explain why
both wind power and hydroelectric power can also be considered to be forms of
solar energy.
Answer:
See Explanation
Explanation:
Renewable energy sources refers to those energy sources that can never be depleted. This means that they can be used severally without getting exhausted. Solar, biomass, wind and hydroelectric power are all renewable energy sources.
Hence, from the perspective described above, we can say that wind is a form of solar energy because wind is formed when the air is heated by the sun.
Hydroelectric power is driven by the water cycle. This water cycle somehow depends on the sun to run efficiently. So, hydroelectric power can also be considered to be a form of solar energy.
DUE IN 15 MINS! I just wanna clarify
Answer:
well im sorry to say this but good luck >:}
Explanation:
You have a mixture that contains 0.380 moles of Ne(g), 0.250 moles of He(g), and 0.500 moles CH4(g) at 400 K and 6.25 atm. What is the partial pressure of He?
Answer:
1.38 atm
Explanation:
Partial pressure of a gas = total pressure × mole fraction of that gas.
Mole fraction of a gas is moles of a gas ÷ total moles of all gases.
The partial pressure of Helium gas is 2.756 atm. This can be calculated by using mol fraction first.
Calculation of mol fraction:
It is the ratio of one mole of gas to the total moles of all the gases.
Total moles of all gases = 0.380+0.250+0.500 =1.13
Mol fraction of Helium gas = 0.500/1.13
Mol fraction of Helium gas = 0.442
Calculation of partial pressure:It is the product of mol fraction of the gas to the total pressure given.
Partial pressure= 0.442 * 6.52 atm
Partial pressure=2.765 atm
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why are the elements take part in bonding
Answer:
Atoms form chemical bonds to make their outer electron shells more stable. The type of chemical bond maximizes the stability of the atoms that form it. ... Covalent bonds form when sharing atoms results in the highest stability. Other types of bonds besides ionic and covalent chemical bonds exist, too.
Help me Pleaseeeeeeeee
drag
effect
friction
parachutes
surface area
streamlined
air
water
You have been hired by Acme Fireworks to create a new line of fireworks. You need a 2.5M solution of HCl to make your prototype. To what volume must 250.0 mL of 6.2M HCl be diluted in order to obtain a 2.5M solution?
A. 260ml
B. 620ml
C. 370ml
D. 990ml
Answer:7283
Explanation:
$34748
As you move down and to the left on the periodic table metals become a
This diagram illustrates the life cycle of a tomato plant. Which stage in this plant life cycle is the adult? Tomato Plant Life Cycle
Answer:
the answer is A
Explanation:
hope it hlp
What is cells function of animal cell??
PLZ HELP ME
Answer:
Controls the movement of substances into and out of the cell.